NGC4565 from High Halden

[MarkS]

Here's the 2nd of my "first light" images from High Halden on 10 April 2011

Fay and Chris have tackled this, so I thought I'd add my own version.

Modified Canon 350D on Tak Epsilon 180ED ( F2.8 ) with IR/UV filter.
24 x 5min exposures



Larger image is here: http://www.markshelley.co.uk/Astronomy/2011/ngc4565_10042011.jpg

But what is this to the bottom right of the larger image:


Mark

[mickw]

I reckon it's an artefact.  It appears to be behind USNO J1230480+252407, just below IC3439

Great image by the way

[MarkS]

I reckon it's an artefact.  It appears to be behind USNO J1230480+252407, just below IC3439

Rats!  I was hoping I had captured some gravitational lensing effect  

In any case it's not an ideal subject for such a short focal length - I'm just waiting for nebula season to come round again!

Mark

[PhilB]

Rats!  I was hoping I had captured some gravitational lensing effect

Next week, maybe...

Very nice image, Mark

[mickw]

Rats!  I was hoping I had captured some gravitational lensing effect

On reflection, it could be but there would have to be something really big in the way to produce a straight line I would have thought.

[Rocket Pooch]

Very nice image, I got a meteor blowing up in one of my frames I'll dig it out.  Well burning up...

[The Thing]

Mark,

I got an artefact similar to this when I got a star lined up with a drying mark under the glass over the CCD of my 350Da. It was shown at the monthly meeting and I think everyone thought I had captured something wonderful - I had meant to crop it out! Wish I could find the image, it's on here somewhere.

Duncan

[mickw]

The weird artifact thingy looks very similar to an Iridium flare - an example in Sky at Night May Hotshots - Milky Way

Doesn't explain how it got behind the star though - if it is a star 

[MarkS]

The weird artifact thingy looks very similar to an Iridium flare - an example in Sky at Night May Hotshots - Milky Way

The artifact was in every sub ...

[mickw]

 
If your full size version is not a crop, the artifact does not seem to be parallel to an edge so could be an "item"

If the skies ever clear again, perhaps try and centre on it.

[JohnP]

Maybe you should see if there are any 'galaxy clumps' in that part of your image.... 

http://www.spacetelescope.org/images/heic1106c/

[Whitters]

I could not see anything on the POSS plates. There is a relatively 'bright' mag 5 star nearby, is it possible that the artefact has come from the star?

[MarkS]

There is a relatively 'bright' mag 5 star nearby, is it possible that the artefact has come from the star?

Quite possibly - yes.

Mark